Definition of niddy-noddy in English:

niddy-noddy

noun

  • 1An idiot, a fool; a grotesque image. Also as adjective: stupid. English regional in later use.

  • 2A hand-held device used to skein and measure yarn, consisting of a vertical central bar with shorter horizontal bars at either end offset at right angles to one another, round which yarn is wound in a figure-of-eight movement; a hand reel.

Origin

Mid 17th century (in an earlier sense). Reduplication of nod.

Pronunciation

niddy-noddy

/ˈnɪdɪˌnɒdi/